from flask import g, redirect, render_template, request, jsonify, current_app, abort

from info import constants, db
from info.models import Category, News, User
from info.modules.profile import profile_blu
from info.utils.common import user_login_data
from info.utils.image_storage import storage
from info.utils.response_code import RET


@profile_blu.route('/other_news_list')
def other_news_list():
    """返回指定用户的发布的新闻"""

    # 1. 取参数
    other_id = request.args.get("user_id")
    page = request.args.get("p", 1)

    # 2. 判断参数
    if not all([other_id, page]):
        return jsonify(errno = RET.PARAMERR, errmsg = "参数错误")

    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")

    try:
        other = User.query.get(other_id)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg="数据查询失败")

    if not other:
        return jsonify(errno=RET.NODATA, errmsg="当前用户不存在")

    try:
        paginate = other.news_list.paginate(page, constants.USER_COLLECTION_MAX_NEWS, False)
        # 获取当前页数据
        news_li = paginate.items
        # 获取当前页
        current_page = paginate.page
        # 获取总页数
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg="数据查询失败")

    news_dict_li = []
    for news_item in news_li:
        news_dict_li.append(news_item.to_basic_dict())

    data = {
        "news_list": news_dict_li,
        "total_page": total_page,
        "current_page": current_page
    }
    return jsonify(errno=RET.OK, errmsg="OK", data=data)


@profile_blu.route('/other_info')
@user_login_data
def other_info():
    user = g.user

    # 获取参数
    other_id = request.args.get('user_id')

    if not other_id:
        abort(404)

    # 查询指定id的用户信息
    try:
        other = User.query.get(other_id)
    except Exception as e:
        current_app.logger.error(e)

    # 默认没有关注
    is_followed = False
    # 如果有用户信息，并且当前用户已登录
    if other and user:
        # 如果用户被当前用户关注过了
        if other in user.followed:
            is_followed = True



    data = {
        "user": g.user.to_dict() if g.user else None,
        "is_followed": is_followed,
        "other_info": other.to_dict()
    }

    return render_template('news/other.html', data= data)


@profile_blu.route('/user_follow')
@user_login_data
def user_follow():
    """用户个人中心的关注列表"""

    # 获取页数
    page = request.args.get('p', 1)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    # 取到当前登陆的用户
    user = g.user

    follows = []
    current_page = 1
    total_page = 1
    try:
        paginate = user.followed.paginate(page, constants.USER_FOLLOWED_MAX_COUNT, False)
        # 获取当前页数据
        follows = paginate.items
        # 总页数
        total_page = paginate.pages
        # 当前页
        current_page = paginate.page
    except Exception as e:
        current_app.logger.error(e)

    user_dict_li = []

    for follow_user in follows:
        user_dict_li.append(follow_user.to_dict())

    data = {
        "users": user_dict_li,
        "current_page": current_page,
        "total_page": total_page
    }

    return render_template('news/user_follow.html', data = data)




@profile_blu.route('/news_list')
@user_login_data
def news_list():
    """个人中心的用户发布的新闻列表页"""

    # 获取参数
    page = request.args.get('p', 1)

    # 校验参数
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    user = g.user
    user_news_list = []
    total_page = 1
    current_page = 1
    # 取出新闻数据
    try:
        paginate = News.query.filter(News.user_id==user.id).paginate(page, constants.USER_COLLECTION_MAX_NEWS,False)
        total_page = paginate.pages
        current_page = paginate.page
        user_news_list = paginate.items
    except Exception as e:
        current_app.logger.error(e)

    # 把新闻数据遍历到新闻字典列表中
    news_dict_li = []
    for news in user_news_list:
        news_dict_li.append(news.to_review_dict())

    data = {
        "total_page": total_page,
        "current_page": current_page,
        "news_list": news_dict_li
    }



    return render_template('news/user_news_list.html', data = data)


@profile_blu.route('/news_release', methods = ["GET", "POST"])
@user_login_data
def news_release():
    """新闻发布的界面展示"""

    if request.method == "GET":
        # 加载新闻分类数据
        try:
            categories = Category.query.all()
        except Exception as e:
            current_app.logger.error(e)

        category_dict_li = []

        # 遍历新闻分类对象到新闻分类字典列表中
        for category in categories:
            category_dict_li.append(category.to_dict())

        # 移除新闻分类为最新的分类
        category_dict_li.pop(0)

        data = {
            "categories": category_dict_li
        }

        return render_template('news/user_news_release.html', data = data)

    # 发布新闻的后端逻辑,当请求方式为POST时,使用form表单形式提交
    # 1.获取参数
    # 标题
    title = request.form.get('title')
    # 2.新闻分类id
    category_id = request.form.get('category_id')
    # 新闻内容
    content = request.form.get('content')
    # 新闻摘要
    digest = request.form.get('digest')
    # 索引图片
    index_image = request.files.get('index_image')
    # 新闻来源
    source = "个人发布"

    # 校验参数
    if not all([title, category_id, content, digest, index_image, source]):
        return jsonify(errno = RET.PARAMERR, errmsg = "参数有误")

    try:
        category_id = int(category_id)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno = RET.PARAMERR, errmsg = "参数错误")

    # 取到图片并上传到七牛云
    try:
        # 读取图片信息
        index_image_data = index_image.read()
        # 上传图片到七牛云
        key = storage(index_image_data)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno = RET.PARAMERR, errmsg = "参数有误")

    # 创建新闻对象,并赋值到对象中
    news = News()
    news.title = title
    news.category_id = category_id
    news.source = source
    news.content = content
    news.index_image_url = constants.QINIU_DOMIN_PREFIX + key
    news.digest = digest
    news.user_id = g.user.id
    # 新闻的状态默认为审核状态
    news.status = 1

    # 保存到数据库中
    try:
        db.session.add(news)
        db.session.commit()
    except Exception as e:
        current_app.logger.error(e)
        db.session.rollback()
        return jsonify(errno = RET.DBERR, errmsg = "数据保存失败")

    return jsonify(errno = RET.OK, errmsg = "发布成功，待审核")

@profile_blu.route('/collection')
@user_login_data
def user_collection():
    """个人中心的用户收藏新闻列表"""

    # 1.获取参数
    page = request.args.get('p', 1)

    # 2.判断参数
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    # 3.查询用户指定页数的收藏新闻
    user = g.user

    news_list = []
    total_page = 1
    current_page = 1

    try:
        paginate = user.collection_news.paginate(page, constants.USER_COLLECTION_MAX_NEWS, False)
        # 查询当前页
        current_page = paginate.page
        # 查询总页数
        total_page = paginate.pages
        # 查询新闻数据
        news_list = paginate.items
    except Exception as e:
        current_app.logger.error(e)

    news_dict_li = []

    # 遍历新闻数据，添加到新闻数据字典列表中
    for news in news_list:
        news_dict_li.append(news.to_basic_dict())

    data = {
        "total_page": total_page,
        "current_page": current_page,
        "collections": news_dict_li
    }

    return render_template('news/user_collection.html', data = data)



@profile_blu.route('/pass_info', methods = ["POST","GET"])
@user_login_data
def pass_info():
    # 获取修改密码的页面
    if request.method == "GET":
        return render_template('news/user_pass_info.html')

    # 修改密码
    # 1.获取参数
    old_password = request.json.get('old_password')
    new_password = request.json.get('new_password')

    # 2.校验参数
    if not all([old_password, new_password]):
        return jsonify(errno = RET.PARAMERR, errmsg = "参数错误")

    # 3.判断旧密码是否正确
    user = g.user
    if not user.check_password(old_password):
        return jsonify(errno = RET.PWDERR, errmsg = "原密码错误")

    # 4.设置新密码
    user.password = new_password

    return jsonify(errno = RET.OK, errmsg = "密码修改成功")


@profile_blu.route('/pic_info', methods = ["POST", "GET"])
@user_login_data
def pic_info():
    """用户头像的逻辑"""
    user = g.user

    # 如果是GET请求方式，就返回用户的头像信息
    if request.method == "GET":
        return render_template('news/user_pic_info.html', data={"user_info": user.to_dict()})

    # 下面是进行头像修改的逻辑  post请求方式
    # 取到上传的图片
    try:
        avatar = request.files.get("avatar").read()
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")

    # 2. 上传头像
    try:
        # 使用自已封装的storage方法去进行图片上传
        key = storage(avatar)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.THIRDERR, errmsg="上传头像失败")

    # 3. 保存头像地址
    user.avatar_url = key
    return jsonify(errno=RET.OK, errmsg="OK", data = {"avatar_url":constants.QINIU_DOMIN_PREFIX+key})


@profile_blu.route('/base_info', methods = ["POST", "GET"])
@user_login_data
def base_info():
    """
    不同的请求方式，做不同的事情
    :return:
    """
    user = g.user
    if request.method == "GET":
        return render_template('news/user_base_info.html', data = {"user":user.to_dict()})

    #　代表是修改用户的资料
    # 1.获取参数
    nick_name = request.json.get('nick_name')
    signature = request.json.get('signature')
    gender = request.json.get('gender')

    # 2.校验参数
    if not all([nick_name, signature, gender]):
        return jsonify(errno = RET.PARAMERR, errmsg = "参数错误")
    if gender not in ("WOMAN", "MAN"):
        return jsonify(errno = RET.PARAMERR, errmsg = "参数错误")

    user.signature = signature
    user.gender = gender
    user.nick_name = nick_name

    return jsonify(errno = RET.OK, errmsg = "OK")


@profile_blu.route('/info')
@user_login_data
def user_info():
    """
    个人中心的业务
    :return:
    """


    user = g.user
    if not user:
        # 如果没有登录重定向到首页
        return redirect('/')
    data = {
        "user": user.to_dict()
    }

    return render_template('news/user.html', data = data)